The Atlantic has the story on X Prize competition to reach the Challenger Deep, the deepest known point in the world at 35,797 feet. Three teams are racing to get the $10 million award. »7/26/11 8:47am 7/26/11 8:47am

Director James Cameron is building a sub that can plunge 36,000 feet beneath the surface of the ocean. If he can pull it off, he could win a $10 million X Prize and shoot footage for an "Avatar" sequel simultaneously. »9/18/10 10:00am 9/18/10 10:00am